Sökning: "icke-metalliska inneslutningar"

Visar resultat 1 - 5 av 16 uppsatser innehållade orden icke-metalliska inneslutningar.

1. 1. Characterisation of Non-metallic Inclusions in Special Steels using Electrolytic Extraction

   Master-uppsats, KTH/Materialvetenskap

   Författare :Josefin Mvele Svensson; [2024]
   Nyckelord :Non-metallic inclusions; electrolytic extraction; SEM; Icke-metalliska inneslutningar; elektrolytisk extraktion; SEM;

   Sammanfattning : When producing high strength special steels strict requirements are in place to assure the quality of the final product, both in terms of harmful elements and  the  content  of  non-metallic  inclusions  (NMI).  Achieving  cleanliness  is a  gradual  process  where all  the  steps  of  the  production  process  are  inter- connected, meaning that it is crucial to know the influence of each step in order to assure the contents of the final product. LÄS MER

3. 2. Optical Emission Spectroscopy Pulse Distribution Analysis on Steel Production Samples : Accuracy, sample variation, spread in different samples and steel grades/routes

   Master-uppsats, KTH/Materialvetenskap

   Författare :Paulo Urrea Molina; [2023]
   Nyckelord :;

   Sammanfattning : This thesis work aimed to contribute to the development of online characterization techniques for non-metallic inclusions in steelmaking. The study focused on assessing the precision and accuracy of the optical emission spectroscopy pulse distribution analysis (OES/PDA) technique using asreference light optical microscope (LOM) and scanning electron microscope(SEM). LÄS MER

4. 3. Investigations of Tool Wear Mechanisms in the Turning of Conventional, Calcium Treated and Ultraclean Steels

   Master-uppsats, KTH/Materialvetenskap

   Författare :Milou Göransson; [2023]
   Nyckelord :Clean steel; Ultraclean steel; Longitudinal turning; Cemented carbide cutting tool; Chemical vapor deposition coating; Machinability; Tool wear; Non-metallic inclusions; Rent stål; Ultrarent stål; Längdsvarvning; Hårdmetall skärverktyg; Kemisk ångdeponering beläggning; Bearbetningsbarhet; Verktygsslitage; Icke-metalliska inneslutningar.;

   Sammanfattning : Application of clean and ultraclean steels have shown to provide favourable mechanical properties for bearings and transmission components, specifically regarding fatigue performance, compared to conventional steel grades. Clean steels are characterized by containing a very low level of non-metallic inclusions. LÄS MER

5. 4. Investigation of Non-Metallic Inclusions in Inconel 718 by Using Conventional Cross-Sectioned (CS) Method and Experimental Extraction Metal-Surfaced (MS) Method

   Master-uppsats, KTH/Materialvetenskap

   Författare :Mehreen Baig; [2022]
   Nyckelord :;

   Sammanfattning : Inconel 718 is a nickel-based alloy, predominantly used in the oil and gas industry, in aircraft engines as well as in gas turbine engines. It provides exceptional properties like high strength, creep resistance, corrosion resistance and long fatigue life at high temperatures as well as in cryogenic environments. LÄS MER

7. 5. Investigations of Large Size Non-Metallic Inclusions in the Nickel-based alloy Inconel 718

   Kandidat-uppsats, KTH/Materialvetenskap

   Författare :Yuehui Ma; Wardah Saleem; [2022]
   Nyckelord :;

   Sammanfattning : Inclusions of different types are present in all steels. How dangerous these are for the properties of the material depends on their chemical composition and the manufacturing process. LÄS MER